This might sound dumb (once again because I’m a dummy) but will we ever see Star Wars movies without the top + bottom black bars? Not even sure what it’s called but isn’t that what IMAX does? (We don’t have any IMAX theaters in Finland). The original trilogy is probably not compatible for this kind of treatment… or would a 4K restoration be enough? The Force Awakens might the first one, I guess.
All star wars movies are 2.35:1 aspect ratio, which means you’ll always see the horizontal black bars as long as the standard for TVs is 16:9 widescreen. TFA had a few scenes shot in IMAX ratio (can’t remember what AR off the top of my head) but there’s little to no chance we’ll see them on the blu-ray.
In terms of resolution, it really doesn’t matter. It could be in 4K but still have the same 2:35:1 ratio. Preserving aspect ratios is an important principle in the world of AV that some tend to forget or do not even know about in the first place.